TRANSMISSION SPUTTERING RATIO IN MONOCRYSTALLINE SILVER FOILS BY HIGH ENERGY PROTONS.
Abstract
The transmission sputtering ratio for protons in monocrystalline silver foils was determined over the energy range from 250 KeV to 700 KeV and found to be approximately .01 for the (111) orientation. The sputtering ratio was found to be an insensitive function of proton energy and target thickness. Target films were prepared by epitaxial growth on the (111) cleavage face of lithium fluoride substrates, and were approximately 98% oriented. Film thickness varied from 11,300 to 30,600 A. Sputtered silver was collected on pyrolitic graphite, irradiated in a thermal neutron flux of 4.5 x 10 to the 10th power neutron/sq cm/sec and detected by computer analysis of the resulting decay curves. Preferential ejection of protons and silver atoms along low index directions of the targets and radiation damage effects were observed. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Jan 01, 1965
- Accession Number
- AD0475378
Entities
People
- Leslie J. Horn
- Sigurd I. Stocking
Organizations
- Naval Postgraduate School